How to use the panda3d.core.TextNode function in Panda3D

def setupPowerBar(self):
        self.powerBar = DirectWaitBar(pos=(0.0, 0, -0.94), relief=DGG.SUNKEN, frameSize=(-2.0,
         2.0,
         -0.2,
         0.2), borderWidth=(0.02, 0.02), scale=0.25, range=1, sortOrder=50, frameColor=(0.5, 0.5, 0.5, 0.5), barColor=(0.75, 0.75, 1.0, 0.8), text='', text_scale=0.26, text_fg=(1, 1, 1, 1), text_align=TextNode.ACenter, text_pos=(0, -0.05))
        self.power = 0
        self.powerBar['value'] = self.power
        self.powerBar.hide()

def addInstructions(pos, msg):
    return OnscreenText(text=msg, style=1, fg=(1, 1, 1, 1), shadow=(0, 0, 0, 1),
                        parent=base.a2dTopLeft, align=TextNode.ALeft,
                        pos=(0.08, -pos - 0.04), scale=.05)

def load(self):
        from toontown.toonbase import ToontownGlobals
        from panda3d.core import TextNode
        textNode = TextNode('moviedialogue')
        textNode.setTextColor(0, 0, 0, 1)
        textNode.setCardColor(1, 1, 1, 1)
        textNode.setCardAsMargin(0, 0, 0, 0)
        textNode.setCardDecal(True)
        textNode.setWordwrap(27.0)
        textNode.setAlign(TextNode.ACenter)
        textNode.setFont(ToontownGlobals.getToonFont())
        self._dialogueLabel = aspect2d.attachNewNode(textNode)
        self._dialogueLabel.setScale(0.06, 0.06, 0.06)
        self._dialogueLabel.setPos(0.32, 0, -0.75)
        self._dialogueLabel.reparentTo(hidden)

self.minLineHeight = minLineHeight
        
        self.maxRows = maxRows
        
        self.recordedText = [] #recorder text sections used in backup
        
        NodePath.__init__(self,'')
        self.setScale(scale)
        self.setPos(pos)
        
        self.currentHeight = 0
        
        
        self.reparentTo(self.__parent)  # @UndefinedVariable
        
        self.textMaker = TextNode('textMaker')
        if font:
            self.setFont(font, specNode = None)
        if fg:
            self.setFg(fg, specNode = None)
        if shadow:
            self.setShadow(shadow, shadowOffset, specNode = None)
        if textScale:
            self.setTexScale(textScale,specNode = None)
        
        self.textMaker.setAlign(TextNode.ALeft)
        
        if shadow:
            pass
        if text:
            self.appendText(text)

numLines = 1,
                                 width = 200,
                                 entryFont=self.font,
                                 focus=1,
                                 suppressKeys=1)
        self.query.bind("press-escape-", self.escape)
        self.query.bind("press-tab-", self.select)
        self.query.accept(self.query.guiItem.getTypeEvent(), self.completion)
        self.query.accept(self.query.guiItem.getEraseEvent(), self.completion)
        pos = self.prefix.getPos()
        bounds = self.query.getBounds()
        llz = bounds[2] / self.text_size
        self.suggestions = OnscreenText(text = "",
                                       font=self.font,
                                       fg=settings.hud_color,
                                       align=TextNode.ALeft,
                                       mayChange=True,
                                       parent=base.a2dBottomLeft,
                                       scale=tuple(self.scale * self.suggestions_text_size),
                                       pos=(pos[0], pos[1] + llz),
                                       )

def addTitle(text):
    return OnscreenText(text=text, style=1, pos=(-0.1, 0.09), scale=.08,
                        parent=base.a2dBottomRight, align=TextNode.ARight,
                        fg=(1, 1, 1, 1), shadow=(0, 0, 0, 1))

def add_instructions(pos, msg):
    """Function to put instructions on the screen."""
    return OnscreenText(text=msg, style=1, fg=(1, 1, 1, 1), shadow=(0, 0, 0, 1),
                        parent=base.a2dTopLeft, align=TextNode.ALeft,
                        pos=(0.08, -pos - 0.04), scale=.05)

def __init__(self):
        # Our standard title and instructions text
        self.title = OnscreenText(text="Panda3D: Tutorial - Music Box",
                                  parent=base.a2dBottomCenter,
                                  pos=(0, 0.08), scale=0.08,
                                  fg=(1, 1, 1, 1), shadow=(0, 0, 0, .5))
        self.escapeText = OnscreenText(text="ESC: Quit", parent=base.a2dTopLeft,
                                       fg=(1, 1, 1, 1), pos=(0.06, -0.1),
                                       align=TextNode.ALeft, scale=.05)

        # Set up the key input
        self.accept('escape', sys.exit)

        # Fix the camera position
        base.disableMouse()

        # Loading sounds is done in a similar way to loading other things
        # Loading the main music box song
        self.musicBoxSound = loader.loadMusic('music/musicbox.ogg')
        self.musicBoxSound.setVolume(.5)  # Volume is a percentage from 0 to 1
        # 0 means loop forever, 1 (default) means
        # play once. 2 or higher means play that many times
        self.musicBoxSound.setLoopCount(0)

        # Set up a simple light.

def add_title(text):
    """Function to put title on the screen."""
    return OnscreenText(text=text, style=1, pos=(-0.1, 0.09), scale=.08,
                        parent=base.a2dBottomRight, align=TextNode.ARight,
                        fg=(1, 1, 1, 1), shadow=(0, 0, 0, 1))

def genLabelText(self, text, i):
        text = OnscreenText(text = text, pos = (-1.3, .5-.05*i), fg=(0,1,0,1),
                      align = TextNode.ALeft, scale = .05)
        return text